When trying to translate certain phrases into English, some people will prefer to use a dictionary. Unfortunately, Vietnamese is limited to 6616 distinct syllables (only half or so is used) and as such there are bound to be homophones. Take for example these rather light hearted mistakes:

Bạn tôi sắp trên đường.[My friend is about to go on the sugar] instead of: My friend is about to go on the road (to go on his way)

Tôi yêu cầu họ xây cầu nhanh lẹ.[I love toilet that they will build the toilet quickly.]instead of: I requested that they build the bridge quickly